The wisdom of those laws is too obvious to need a comment; they have been already noticed: Numbers 35:30. But what a sweet thought is it to the believer's experience, that in divine things there are the Holy Three which bear record in heaven, and there is the evidence of three which carry a corresponding testimony to his heart; namely, the HOLY GHOST as the first great witness in the spirits of his people; his sacred word as the second; and the believer's heart as the third, in which the evidence is given; and all these three agree in one, in their united testimony to the truth as it is in JESUS. 2 Corinthians 13:1.
Deuteronomy 19:15-20
15 One witness shall not rise up against a man for any iniquity, or for any sin, in any sin that he sinneth: at the mouth of two witnesses, or at the mouth of three witnesses, shall the matter be established.
16 If a false witness rise up against any man to testify against him that which is wrong;
17 Then both the men, between whom the controversy is, shall stand before the LORD, before the priests and the judges, which shall be in those days;
18 And the judges shall make diligent inquisition: and, behold, if the witness be a false witness, and hath testified falsely against his brother;
19 Then shall ye do unto him, as he had thought to have done unto his brother: so shalt thou put the evil away from among you.
20 And those which remain shall hear, and fear, and shall henceforth commit no more any such evil among you.